Need to void 4 checks not written to anyone

These checks were not assigned to a supplier.  The check number needs to be voided in SAP so the next check run will begin on the 5th check.  They were ripped by mistake.  ck#13239-13241 and I need SAP to remember my next number will be #13242.  I am not locating anything in the help files regarding this.

Thanks,

Rose